tinqs/ci — composite actions + Lambda dispatcher for Spot CI runners

Actions: checkout, setup-go, setup-node, setup-aws
Dispatcher: Lambda → EC2 Spot (ephemeral, self-terminating)
Images: base, go, node, docker, deploy, godot

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

setup-go/action.yml

@@ -0,0 +1,44 @@
+# tinqs/ci/setup-go — Tinqs Studio CI
+# Downloads Go from go.dev and adds it to PATH.
+# Works on any Linux (Alpine, Debian, etc.) — just a tarball extract.
+# Skips install if the correct version is already present (pre-baked runner image).
+# Composite action — runs directly on the host.
+# Author: Ozan + Claude Code — 2026-05-22
+
+name: 'Tinqs Setup Go'
+description: 'Install Go and configure PATH'
+
+inputs:
+  go-version:
+    description: 'Go version to install'
+    default: '1.26.2'
+
+runs:
+  using: 'composite'
+  steps:
+    - run: |
+        GO_VERSION="${{ inputs.go-version }}"
+
+        # Skip if already installed at correct version
+        if command -v go &>/dev/null; then
+          CURRENT=$(go version | sed 's/.*go//' | cut -d' ' -f1)
+          if [ "$CURRENT" = "$GO_VERSION" ]; then
+            echo "Go $GO_VERSION already installed"
+            go version
+            exit 0
+          fi
+        fi
+
+        echo "Installing Go $GO_VERSION..."
+        # Use wget on Alpine (no curl), curl elsewhere
+        if command -v curl &>/dev/null; then
+          curl -fsSL "https://go.dev/dl/go${GO_VERSION}.linux-amd64.tar.gz" | tar -C /usr/local -xz
+        elif command -v wget &>/dev/null; then
+          wget -qO- "https://go.dev/dl/go${GO_VERSION}.linux-amd64.tar.gz" | tar -C /usr/local -xz
+        else
+          apk add --no-cache curl && curl -fsSL "https://go.dev/dl/go${GO_VERSION}.linux-amd64.tar.gz" | tar -C /usr/local -xz
+        fi
+        echo "/usr/local/go/bin" >> "$GITHUB_PATH"
+        export PATH="/usr/local/go/bin:$PATH"
+        go version
+      shell: bash